72 M E M O I R S e/^ ^^^ 
ing the quantity of a fmall pin's head on the obje6l-plate of a 
microfcope, 7 or 8 forts of Animakula of different fizes and 
ihapes were plainly to be difcerned fwimming in this fubftance, 
fee Fig. i. Plate III. they were all very nimble in their motions, 
and were by computation magnified feveral thoufand times: The 
thin fcum on pepper-water, which refem.bled flakes of fait on 
fome forts of human urine, applied in the fame manner to the ob- 
je6t -plate of the microfcope, was only cluflers of y4nimakulay 
that had liquid matter enough to fwim in, and their numbers, 
motions, variety and minutenefs were furprifing : In a decoflion of 
herbs that was llrained, were feen creatures like little eels, iharp 
at both ends, and with a wriggling motion Fig. 1 : Thefe fmall 
animals abovementioned referable the nature of fifh in feveral re- 
fpefts j firft, they flock together, and lie cloie, as if they were in 
fhoals, like carps in a pond, when deprived of their liquor, they 
will feem to ftruggle for want of it, and then in a minute or left, 
they will feem dead on the object-plate j but putting a little wa- 
ter to them, in half a minute they will move themfelves again, 
and by degrees begin to iwim faintly at firft, and then recovering 
their llrength again, they will perform their brifk motions as vi- 
gorous as ever : Thele ^nmalcula chuie for the moft part the 
top of the liquor, poffibly for the fake of the air 5 now as a fur- 
ther confirmation, that they are Animaktila^ which is doubted 
of by Ibme, the following obfervations may ferve 5 if you take a 
fine needle, and put the point into fpirit of vitriol.^ and prick a 
fmall drop with it, thele minute animals will from moving brifkly 
about, fpread themfelves and appear to tumble down dead Fig. ^ 5 
diflblved fait produces the fame eflFeCt upon them, with this diffe- 
rence, that inliead of becoming flat, as thole with fpirit of vi- 
triol did, they will flirink into an oblong round form : Tincture. 
of fait of tariar kills them more immediately ^ but yet they will 
be \o fick, as appears by convulfive motions, that they will grow 
faint and languid apace, and then fall down dead to the bottom,, 
without any change in their fliape : Ink kills them as foon as fpi- 
rit of vitriol, but makes them feem to flirink feveral ways : Frefli 
blood kills them almoft as loon as fpirit of vitriol ; urine kills 
them too in a little time, tho' not lb foon^ fugar diffolved, like 
fait, kills them alfo, and with it ibme die flat, and fome round 3 
fack will kill them, but not fo fuddenly as the other liquors. 
JZt 
